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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2011 Isaku Yamahata
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import os
from nova import test
from nova import utils
from nova.virt.disk import api as disk_api
from nova.virt import driver
class TestVirtDriver(test.TestCase):
def test_block_device(self):
swap = {'device_name': '/dev/sdb',
'swap_size': 1}
ephemerals = [{'num': 0,
'virtual_name': 'ephemeral0',
'device_name': '/dev/sdc1',
'size': 1}]
block_device_mapping = [{'mount_device': '/dev/sde',
'device_path': 'fake_device'}]
block_device_info = {
'root_device_name': '/dev/sda',
'swap': swap,
'ephemerals': ephemerals,
'block_device_mapping': block_device_mapping}
empty_block_device_info = {}
self.assertEqual(
driver.block_device_info_get_root(block_device_info), '/dev/sda')
self.assertEqual(
driver.block_device_info_get_root(empty_block_device_info), None)
self.assertEqual(
driver.block_device_info_get_root(None), None)
self.assertEqual(
driver.block_device_info_get_swap(block_device_info), swap)
self.assertEqual(driver.block_device_info_get_swap(
empty_block_device_info)['device_name'], None)
self.assertEqual(driver.block_device_info_get_swap(
empty_block_device_info)['swap_size'], 0)
self.assertEqual(
driver.block_device_info_get_swap({'swap': None})['device_name'],
None)
self.assertEqual(
driver.block_device_info_get_swap({'swap': None})['swap_size'],
0)
self.assertEqual(
driver.block_device_info_get_swap(None)['device_name'], None)
self.assertEqual(
driver.block_device_info_get_swap(None)['swap_size'], 0)
self.assertEqual(
driver.block_device_info_get_ephemerals(block_device_info),
ephemerals)
self.assertEqual(
driver.block_device_info_get_ephemerals(empty_block_device_info),
[])
self.assertEqual(
driver.block_device_info_get_ephemerals(None),
[])
def test_swap_is_usable(self):
self.assertFalse(driver.swap_is_usable(None))
self.assertFalse(driver.swap_is_usable({'device_name': None}))
self.assertFalse(driver.swap_is_usable({'device_name': '/dev/sdb',
'swap_size': 0}))
self.assertTrue(driver.swap_is_usable({'device_name': '/dev/sdb',
'swap_size': 1}))
class TestVirtDisk(test.TestCase):
def setUp(self):
super(TestVirtDisk, self).setUp()
self.executes = []
def fake_execute(*cmd, **kwargs):
self.executes.append(cmd)
return None, None
self.stubs.Set(utils, 'execute', fake_execute)
def test_lxc_teardown_container(self):
def proc_mounts(self, mount_point):
mount_points = {
'/mnt/loop/nopart': '/dev/loop0',
'/mnt/loop/part': '/dev/mapper/loop0p1',
'/mnt/nbd/nopart': '/dev/nbd15',
'/mnt/nbd/part': '/dev/mapper/nbd15p1',
}
return mount_points[mount_point]
self.stubs.Set(os.path, 'exists', lambda _: True)
self.stubs.Set(disk_api._DiskImage, '_device_for_path', proc_mounts)
expected_commands = []
disk_api.teardown_container('/mnt/loop/nopart')
expected_commands += [
('umount', '/dev/loop0'),
('losetup', '--detach', '/dev/loop0'),
]
disk_api.teardown_container('/mnt/loop/part')
expected_commands += [
('umount', '/dev/mapper/loop0p1'),
('kpartx', '-d', '/dev/loop0'),
('losetup', '--detach', '/dev/loop0'),
]
disk_api.teardown_container('/mnt/nbd/nopart')
expected_commands += [
('umount', '/dev/nbd15'),
('qemu-nbd', '-d', '/dev/nbd15'),
]
disk_api.teardown_container('/mnt/nbd/part')
expected_commands += [
('umount', '/dev/mapper/nbd15p1'),
('kpartx', '-d', '/dev/nbd15'),
('qemu-nbd', '-d', '/dev/nbd15'),
]
self.assertEqual(self.executes, expected_commands)
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